Application method of disease resistant drug for Chinese cabbage downy mildew

Abstract

The invention discloses an application method of a disease resistant drug for Chinese cabbage downy mildew. The application method comprises the following steps: A. a stock solution is prepared, and comprises the following components: 50% thiram wettable powder, 75% chlorothalonil wettable powder, 35% atibeprone (ridomil), honeysuckle saponin, baicalin, indirubin, honeysuckle and Chinese parsley; B. Chinese cabbages are cultivated; seeds without diseases are used, are dipped for 1.5-2 hours by using 400 times of volume ratio of the stock solution, and are taken out for flushing with clear water to sow; C. in the morbidity period, the stock solution is added with water for diluting to 600 times of solution for spraying; D. when the spraying is implemented in the step C, the stock solution is added with water for diluting to 500 times of solution for irrigating roots. The application method has the advantages of simplicity, simple application method of used products, simple preparation of the used products, convenience in use and good effect on treatment of the Chinese cabbage downy mildew; through the test of experiments, 400-600 times of liquid of the mixture has an obvious inactivation effect on fungus fungi imperfecti and peronospora parasitica; the disinfection effect is good.

Description

[0001] Technical field:

[0002] The invention relates to vegetable medicines, in particular to a method for using disease-resistant medicines for cabbage downy mildew.

[0003] Background technique:

[0004] Cabbage downy mildew, the disease mainly damages the leaves, initially light yellow or yellow-green lesions, which expand to yellowish brown, polygonal or irregular. When the air is humid, a white to off-white frosty mold layer is produced on the diseased part of the back of the leaf. The pathogen of this disease is: parasitic downy mildew, the mycelium is colorless, without septum, grows between the silk cells, and stretches into the cell to absorb water and nutrients by the haustoria, and the haustoria is cystic, spherical or bifurcated. During vegetative reproduction, cyst peduncles are produced from the hyphae, protruding from the stomata, colorless, without septa, solitary or in bundles of 2-4 roots, 260-300 μm long, the base of the main branch is slightly enlarg...